public void Run(IBackgroundTaskInstance taskInstance)
{
// Connect the Gas Sensor MQ2 to analog port 0
IGasSensorMQ2 sensor = DeviceFactory.Build.GasSensorMQ2(Pin.AnalogPin0);
// Loop endlessly
while (true)
{
try
{
// Check the value of the button, turn it into a string.
string sensorvalue = sensor.SensorValue().ToString();
System.Diagnostics.Debug.WriteLine("Gas Sensor value is " + sensorvalue);
}
catch (Exception ex)
{
// NOTE: There are frequent exceptions of the following:
// WinRT information: Unexpected number of bytes was transferred. Expected: '. Actual: '.
// This appears to be caused by the rapid frequency of writes to the GPIO
// These are being swallowed here/
// If you want to see the exceptions uncomment the following:
// System.Diagnostics.Debug.WriteLine(ex.ToString());
}
}
}
//Read gas value from Gas Sensor
private void ReadGasValue()
{
int tempGasValue = _gasSensor.SensorValue();
if (tempGasValue >= 0 && tempGasValue <= 1023)
{
_gasValue = tempGasValue * 100 / 1023;
}
else
{
Debug.WriteLine("WARNING: Gas value ignored, out of range: " + tempGasValue);
}
}
public GroveMessage GetSensorValue()
{
GroveMessage message = new GroveMessage();
try
{
temphumiSensor.Measure();
message.Temp = temphumiSensor.TemperatureInCelsius;
message.Hum = temphumiSensor.Humidity;
message.Sound = soundSensor.SensorValue();
message.Light = lightSensor.SensorValue();
message.GasSO = gasSensor.SensorValue();
message.PIR = pirMotion.IsPeopleDetected();
message.Timestamp = DateTime.Now.ToString();
}
catch (Exception ex)
{
throw ex;
}
return(message);
}